add liquibase to remove Arch and ContentArch tables
update import and candlepin_api for content arches
make json.model.Content return list of arch Strings
remove getParsedArches from models
call Arch.isCompatible with correct args

use PRODUCT_ARCH_ATTR contstant for product arch
attribute name
rename Arch.isCompatable to Arch.contentForConsumer

add unit tests
checkstyle cleanup
use correct arch format for content for specs